12222221222213 has 2 divisors, whose sum is σ = 12222221222214. Its totient is φ = 12222221222212.

The previous prime is 12222221222179. The next prime is 12222221222251. The reversal of 12222221222213 is 31222212222221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12220911288964 + 1309933249 = 3495842^2 + 36193^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222221222213 - 2⁶ = 12222221222149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222221212213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111110611106 + 6111110611107.

It is an arithmetic number, because the mean of its divisors is an integer number (6111110611107).

Almost surely, 2^{12222221222213} is an apocalyptic number.

It is an amenable number.

12222221222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222221222213 is an equidigital number, since it uses as much as digits as its factorization.

12222221222213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 26.

Adding to 12222221222213 its reverse (31222212222221), we get a palindrome (43444433444434).

The spelling of 12222221222213 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred thirteen".